Midrash sa Ezekiel 1:10: Otzar Midrashim, Pirkei DeRabbi Eliezer, Shir HaShirim Rabbah & Shemot Rabbah

"Seraphim were standing above Him; each one had six wings" (Isaiah 6:2) and it is written "And each one had four faces and four wings" (Ezekiel 1:6). You find Isaiah saw when the Temple stood and Israel was inside it, and saw them with six wings. But Ezekiel, after it was destroyed and Israel exiled from it, he saw them with four. And why did Isaiah see six for each seraph? With two he covers his face so as not to gaze upon the Divine Presence, as it says "For man cannot see Me [and live]" (Exodus 33:20) - even the angels about whom it says "and the likeness of their faces was human faces" (Ezekiel 1:10), with two he covers his legs - these are their feet which are like a calf's hoof, so they will not mention the sins of your fathers [with the calf], and with two he flies, for with these they praise the Omnipresent - behold six. But after the Temple was destroyed, they came to praise before the Holy One Blessed Be He. He takes hold of them and says "My house lies in ruins, My children are exiled - and you seek to praise before me?" Therefore Ezekiel saw four, and Isaiah saw six.

When He || speaks towards the west He speaks between the two Cherubim with the face of the ox, when He speaks towards the north He speaks between the two Cherubim with the face of an eagle.

Another matter, “palanquin” (Song of Songs 3:9), this is the world. “King Solomon [Shlomo] made himself” (Song of Songs 3:9), the King [of Whom it may be said] that peace is His. “Of the timber of Lebanon” (Song of Songs 3:9), it was constructed from the location of the Holy of Holies below, as we learned: After the Ark was taken, there was a rock from the days of the early prophets, and it was called Foundation. Why was it called Foundation? It is because the entire world was founded from it. That is what is written: “From Zion, the perfection of beauty” (Psalms 50:2).¹⁰²Thus, the world was created by being expanded from the rock in the location of the Holy of Holies. This is alluded to by the phrase “timber of Lebanon,” because Solomon built the Temple with wood from Lebanon (see I Kings 5:16–28).
“He made its pillars of silver” (Song of Songs 3:10), this is the family tree.¹⁰³The Jewish families of pure lineage are pillars of the world (Midrash HaMevoar). “Its cushion of gold” (Song of Songs 3:10), these are fruits of the ground and fruits of the tree that are sold for gold. “Its seat of purple wool” (Song of Songs 3:10), just as it says: “Who rides the heavens in your assistance” (Deuteronomy 33:26). “Its interior is plated with love” (Song of Songs 3:10), Rabbi Yudan said: This is the merit of the Torah and the merit of the righteous people who study it. Rabbi Azarya said in the name of Rabbi Yehuda in the name of Rabbi Simon: This is the Divine Presence.
Another matter, “palanquin” (Song of Songs 3:9), this is the Throne of Glory. “King Solomon [Shlomo] made himself” (Song of Songs 3:9), the King [of Whom it may be said] that peace is His. “Of the timber of Lebanon” (Song of Songs 3:9), this is the location of the Holy of Holies On High, which is opposite the location of the Holy of Holies below. That is what is written: “The place [makhon] of Your dwelling” (Exodus 15:17), corresponding [mekhuvan] to Your dwelling.¹⁰⁴The place of God’s dwelling On High is opposite the Holy of Holies, which is the place of His dwelling on earth.
“He made its pillars of silver” (Song of Songs 3:10), just as it says: “The pillars of heaven sag” (Job 26:11). “Its cushion of gold” (Song of Songs 3:10), these are matters of Torah, as it is stated: “They are more desirable than gold and fine gold” (Psalms 19:11). “Its seat of purple wool” (Song of Songs 3:10), just as it says: “To the Rider of the ancient heavens of heavens” (Psalms 68:34). “Its interior is plated with love” (Song of Songs 3:10), Rabbi Berekhya and Rabbi Bon [said] in the name of Rabbi Abahu: There are four who are proud: The proudest of the birds is the eagle; the proudest of the domesticated animals is the bull; the proudest of the beasts is the lion; the proudest of them all is man. The Holy One blessed be He took all of them and carved them into the Throne of Glory,¹⁰⁵See Ezekiel 1:10. as it is stated: “The Lord has established His throne in the heavens, [and His kingship rules over all]” (Psalms 103:19). From the fact that He established His throne over the proud, you know that “His kingship rules over all.”